Hydraulic cylinder noise is also a problem that many users will encounter. So what is the cause of the noise of the hydraulic cylinder? Today, Dalan Hydraulic Xiaobian will analyze and summarize the causes and solutions of noise for everyone.

1, air intrusion into the hydraulic system is the main reason for noise.

2, the relief valve is unstable, such as due to the improper combination of the slide valve and the valve hole or the contact of the taper valve and the seat is stuck by dirt, the damping hole is blocked, the spring is crooked or the failure of the spool is stuck or the movement in the valve hole is not effective, causing system pressure fluctuations and noise.

3, improper adjustment of the reversing valve, so that the reversing valve spool moves too fast, resulting in reversing impact, resulting in noise and vibration.

4, mechanical vibration, such as long tubing, elbow more and not fixed, when the oil flow through, especially when the flow rate is high, easy to cause pipe shaking; The rotating part of the motor and hydraulic pump is unbalanced, or the alignment is not good during installation, or the coupling is loose, etc., which can produce vibration and noise.

Hydraulic cylinder

The solution to the noise of the hydraulic cylinder is as follows:

1. The filter of the hydraulic cylinder is blocked by dirt and cannot filter oil: use clean cleaning oil to remove dirt from the filter.

2, the oil level is insufficient, the oil suction position is too high, the oil suction pipe is exposed to the oil surface: refuel to the oil standard position, reduce the oil suction position.

3. There is no paper pad on both sides of the hydraulic oil pump pump body and pump cover; The pump body and the pump cover are not vertically sealed: air is inhaled when rotating: the paper pad is added between the pump body and the pump cover; The pump body is ground with emery on the plate, so that the verticality error between the pump body and the pump cover is not more than 0.005mm, and the connection between the pump body and the pump cover is tightened, and there is no leakage phenomenon.

4. The drive shaft of the hydraulic cylinder is different from the motor coupling, and there is distortion friction: adjust the concentricity of the pump and the motor coupling, so that the error does not exceed 0.2mm.

5, the mesh accuracy of the hydraulic cylinder gear is not enough: the grinding gear reaches the mesh accuracy of the gear.

6, the hydraulic cylinder shaft oil seal skeleton off, the pump body is not sealed: replace the qualified pump shaft oil seal.